CVE-2025-21666 - Linux Kernel vsock Null Pointer Dereference Vulnerability

CVE-2025-21666 - Linux Kernel vsock Null Pointer Dereference Vulnerability

https://cvefeed.io/rssfeed/latest.atom / Fri, 01/31/2025 - 14:54
CVE ID : CVE-2025-21666
Published : Jan. 31, 2025, 12:15 p.m. | 45 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: vsock: prevent null-ptr-deref in vsock_*[has_data|has_space] Recent reports have shown how we sometimes call vsock_*_has_data() when a vsock socket has been de-assigned from a transport (see attached links), but we shouldn't. Previous commits should have solved the real problems, but we may have more in the future, so to avoid null-ptr-deref, we can return 0 (no space, no data available) but with a warning. This way the code should continue to run in a nearly consistent state and have a warning that allows us to debug future problems.
Severity: 0.0 | NA
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